155162435551 has 4 divisors (see below), whose sum is σ = 157792307400. Its totient is φ = 152532563704.

The previous prime is 155162435471. The next prime is 155162435557. The reversal of 155162435551 is 155534261551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155534261551 = 6451 ⋅24110101.

It is a cyclic number.

It is not a de Polignac number, because 155162435551 - 2¹³ = 155162427359 is a prime.

It is a super-2 number, since 2×155162435551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155162435498 and 155162435507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155162435557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314935836 + ... + 1314935953.

It is an arithmetic number, because the mean of its divisors is an integer number (39448076850).

Almost surely, 2^155162435551 is an apocalyptic number.

155162435551 is a deficient number, since it is larger than the sum of its proper divisors (2629871849).

155162435551 is an equidigital number, since it uses as much as digits as its factorization.

155162435551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629871848.

The product of its digits is 450000, while the sum is 43.

The spelling of 155162435551 in words is "one hundred fifty-five billion, one hundred sixty-two million, four hundred thirty-five thousand, five hundred fifty-one".